文献类型：期刊文献

英文题名：Simulation experiment on sinkhole formation caused by soils disintegration and the advance-forecasting of sinkhole risk

作者：Jiang, Fuwei

第一作者：姜伏伟

通信作者：Jiang, FW[1];Jiang, FW[2]|[144404e4a79bdaa84b263]姜伏伟;[14440bda2e96262ed9844]姜伏伟;

机构：[1]Guizhou Inst Technol, Sch Resources & Environm Engn, Guiyang 550003, Peoples R China;[2]Chinese Acad Geol Sci, Inst Karst Geol, Guilin 541004, Peoples R China

第一机构：贵州理工学院资源与环境工程学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Resources & Environm Engn, Guiyang 550003, Peoples R China;corresponding author), Chinese Acad Geol Sci, Inst Karst Geol, Guilin 541004, Peoples R China.|贵州理工学院资源与环境工程学院;贵州理工学院;

年份：2020

卷号：79

期号：19

外文期刊名：ENVIRONMENTAL EARTH SCIENCES

收录：;EI(收录号：20203909243337);Scopus(收录号：2-s2.0-85091416036);WOS:【SCI-EXPANDED(收录号:WOS:000576140300004)】；

基金：This work is supported by the social development fund of the support plan projects of Guizhou Science and Technology Department, China (No. [2016]2846).

语种：英文

外文关键词：Sinkhole formation; Soil disintegration; Advance forecasting; Simulating experiment; Critical values

摘要：Sinkholes are a common geological hazard around the world. However, it is difficult to carry out the associated indoor simulation experiments because of the complicated factors involved. Our previous research showed that sinkholes in the aerated zone caused by soil disintegration exhibit accurate critical conditions. Therefore, the kind of sinkhole formation is simulated in the paper. Before the simulate experiment, the critical value of the disintegration of clay samples is tested, which helps to control the simulation conditions. With a designed simulation apparatus, soil disintegration was conducted 70 times from October 23, 2017, to June 1, 2018, and a sinkhole formed. This experiment results indicate two developmental laws of sinkholes forming in the aerated zone. One is the forming process which has three stages, soil-void formation, soil-void expansion, and roof collapse. Second is that the two conditions water content is less than the critical value and contact between water and soil, causing the sinkhole formation. At the forming, two conditions are clear, and can easily be monitored by the associated factors in the field where sinkholes have occurred or are about to occur. According to the principle, another simulation experiment was carried out. As a result, an advanced prediction of a sinkhole is achieved in the aerated zone.